The operation of power failure shall follow the sequence of switch, load side knife switch and power side knife switch, and the switching operation of power transmission shall follow the reverse sequence of the above, and it is strictly prohibited to pull and close the knife switch with load.
Due to the complex internal structure of the box transformer and the large number of power distribution devices, special care must be taken in the normal operation and maintenance.
Five prevention: short for prevention of electrical misoperation, namely prevention of false opening and closing of circuit breakers; Prevent the handcart isolation plug of the metal enclosed (armored) switch cabinet from being pushed in and pulled out with the load opening and closing disconnectors or with the load; Prevent the electrified grounding wire from hanging or closing the grounding swit
In short, if low-quality wires are used, it will produce: 1. The wires are very hot; 2. The insulation is prone to breakdown or premature aging, resulting in electric leakage; 3. Large power consumption; 4. It is easy to cause fire and cause heavy casualties.